Propyne manufacturers and suppliers

Propyne suppliers

Properties

Melting point:: -102.7 °C (lit.)

Boiling point:: -23.2 °C (lit.)

Density: 0.6070

vapor pressure: 204.6 mm Hg ( −49.5 °C)

refractive index: 1.3863

Flash point:: -51 °C

solubility: Soluble in alcohol, benzene, and chloroform (Weast, 1986)

form: gas

color: Colorless, flammable gas with a sweet odor

Water Solubility: 3,640 mg/L at 20 °C (quoted, Verschueren, 1983)

Henry's Law Constant: 0.11 at 25 °C (Hine and Mookerjee, 1975)

Exposure limits: ACGIH:TLV-TWA 1000 ppm (1640 mg/m3),Explosion hazard
OSHA:PEL-TWA 1000 ppm (1650 mg/m3)
NIOSH:REL-TWA 1000 ppm

InChI: 1S/C3H4/c1-3-2/h1H,2H3

InChIKey: MWWATHDPGQKSAR-UHFFFAOYSA-N

SMILES: CC#C

CAS DataBase Reference: 74-99-7(CAS DataBase Reference)

NIST Chemistry Reference: Propyne(74-99-7)

EPA Substance Registry System: Propyne (74-99-7)

Safety Information

Symbol(GHS): GHS02,GHS04,GHS07

Signal word: Danger

Hazard statements: H220-H280-H335

Precautionary statements: P210-P410+P403

target organs: Respiratory system

PPE: Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)

Hazard Codes: F,Xi

Risk Statements: 11-37-43

Safety Statements: 16-36-38-37

OEB: A

OEL: TWA: 1000 ppm (1650 mg/m3)

RIDADR: UN 1954 2.1

WGK Germany: -

RTECS: UK4250000

TSCA: TSCA listed

HazardClass: 2.1

PackingGroup: II

HS Code: 2901290000

Storage Class: 2A - Gases

Hazard Classifications: Flam. Gas 1A
Press. Gas Compr. Gas
STOT SE 3

Hazardous Substances Data: 74-99-7(Hazardous Substances Data)

IDLA: 1,700 ppm [10% LEL]

REACH Registrations: Active

Use

Propyne is highly flammable. The liquid material in cylinders contains about 30% propadiene. Detonation may occur at 95° C [MCA Case History No. 632]. Reacts exothermically with many oxidizing agents and with some reducing agents as well. May react with silver, copper, and mercury salts in aqueous solution to give explosive acetylides. Incompatible with brass that contains more than 65% copper, with other copper-containing alloys, with Monel metal, with neoprene, polyethylene, and, to a lesser extent, with Teflon. May enflame in air in the presence of Co, Hg, Hg salts, K, Ag, Ag salts, RbH, CsH, halogens, HNO3, NaH. Can decompose explosively when compressed to 4.5 to 5.6 atmospheres. Moderate explosion hazard when exposed to heat or flame or by spontaneous chemical reaction. Has been known to decompose explosively at high pressures and moderate temperatures in the absence of air.

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